Save Big Bud

Trying to save my friend. We are in tough times right now just like a lot of people but I will try whatever I can to give him a chance. If you can help I would be eternally grateful. He has a
mass on his tail and the options we were given are put him down or cut off his tail.
https://givesendgo.com/GBPSV?utm_source=sharelink&utm_medium=copy_link&utm_campaign=GBPSV